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Fig. 2A. —58-year-old man with hemorrhagic cyst. Axial opposed-phase T1-weighted MR image (TR/TE, 167/2.6) shows 1.3-cm hyperintense mass in upper pole of left kidney. India ink artifact (arrow) is present at interface of renal mass with perinephric fat and not at interface of mass with kidney. Therefore, this mass does not contain macroscopic fat, excluding diagnosis of macroscopic fat-containing angiomyolipoma.